C语言--HSV转RGB

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void HSVtoRGB(uint8_t *r, uint8_t *g, uint8_t *b, uint16_t h, uint16_t s, uint16_t v)
{
	// R,G,B from 0-255, H from 0-360, S,V from 0-100
	int i;
	float RGB_min, RGB_max;
	RGB_max = v*2.55f;
	RGB_min = RGB_max*(100 - s) / 100.0f;

	i = h / 60;
	int difs = h % 60; // factorial part of h

					   // RGB adjustment amount by hue 
	float RGB_Adj = (RGB_max - RGB_min)*difs / 60.0f;

	switch (i) {
	case 0:
		*r = RGB_max;
		*g = RGB_min + RGB_Adj;
		*b = RGB_min;
		break;
	case 1:
		*r = RGB_max - RGB_Adj;
		*g = RGB_max;
		*b = RGB_min;
		break;
	case 2:
		*r = RGB_min;
		*g = RGB_max;
		*b = RGB_min + RGB_Adj;
		break;
	case 3:
		*r = RGB_min;
		*g = RGB_max - RGB_Adj;
		*b = RGB_max;
		break;
	case 4:
		*r = RGB_min + RGB_Adj;
		*g = RGB_min;
		*b = RGB_max;
		break;
	default:		// case 5:
		*r = RGB_max;
		*g = RGB_min;
		*b = RGB_max - RGB_Adj;
		break;
	}
}